A potential benefit of brown seaweed (<i>Stoechospermum marginatum</i>) using for sustainable fabric dyeing

Abstract

Coastal areas are famous for its diversity and abundance of marine flora and fauna. Several tonns of seaweeds grows annually and during low tide they are easily avaliable either in growing or drift form. The current investigation was focus to target these marine flora to provide an alternative to toxic colorants. The brown seaweed, <em>Stoechospermum marginatum</em> were collected form the coastal area of Arabian sea during low tide. Seaweed colorants can be used as sustainable and eco-friendly source to make a value added product. Extraction process were optimized by varying solvent medium (alkali, acidic and distilled water), solvent concentration and extraction time. Eco-friendly metal salt like ferrous and alumium sulphate were used to developed twenty-four soft shades on S/J 100% cotton. Dye exhaustion, color measurements and fastness properties such as wash, crock and light fastness of resultant fabric have been studied. The optimized condition of extraction process was 5g/L sodium hydroxide for 3hrs processing time. The dyed fabric having 5g/L sodium hydroxide extarcted dye and mordanted with ferrous sulphate shows maximum exhaustion percentage as well as good to very good fastness property while the Δa and Δb values of color measurements shows that the dyed fabric has reddish-yellow shade.